摘要
介绍了一种通过USB总线进行数据传输,并通过上位机软件对数据进行显示和记录的便携、易用、经济的新型USB虚拟光功率计的设计方法。该方法通过InGaAs-PIN30613光电二极管采集光功率,并通过MAX4238和CD4051对信号进行二级放大,其模/数转换部分选用16位模/数转换芯片AD7715,再经过控制芯片和FIFO芯片把数字信号发送给USB接口芯片AN2131,最后通过上位机软件LabVIEW实现USB虚拟光功率测量功能,因而具有高性能、低价格、功能灵活和可扩展等优点。
A design simple and economic design of Virtual Opetical Power Meter Based on USB virtual optical power meter based on USB is designed, which transmits data by USB bus, display and record data by host computer. The design method collects optical power by InGaAs-PIN30613, performs second-level amplification on the signal by MAX4238 and CD4051. The A/ D converters selects 16 b A/D conversion chip AD7715, the digital signal is transmitted to USB interface chip AN2131 through control chip and FIFO chip, the function of USB virtual optical power measurement is realized by host computer LabVIEW. It has advantages such as high performance, low price, flexible function and expandability.
出处
《物联网技术》
2011年第7期58-60,共3页
Internet of things technologies
